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Dual Batteries

Discussion in '12V Electronics' started by bubbatrucklover, Mar 30, 2013.

  1. bubbatrucklover

    bubbatrucklover Heavy Metal Red Neck

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    I had written a post a while back about a dual battery install I wanted to do. This is what the finished product would look like. (Minus the bar over the battery.) LOL

    [​IMG]

    I'm not sure if this project will take place next week or within the month etc. For now I will be using the old stock battery and then up grade to a second Optima. I will also be upgrading WAY down the road to a Power-Gate Single Rectifier Isolator. (REAL pricey for now.)

    I have a 200 amp/100 amp idle alternator I have now and will use more 0 gauge wire. I plan on this breaker:

    [​IMG]

    between it and this battery isolator:

    [​IMG]

    and this holder and a 200 amp fuse between each battery:

    [​IMG]

    [​IMG]

    Does any one see any problems with my set up brand wise or other.:dunno:

    Thanks :cheers:
     
  2. daddy

    daddy Follicularly Disenfra

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    Only problem I see is that you plan to remove that fender support. Put it back when you are done, it's there for a reason. :thumbs:
     
  3. Zembonez

    Zembonez I hate black wheels...

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    Yup. That bar is needed. Why the isolator?
     
  4. bubbatrucklover

    bubbatrucklover Heavy Metal Red Neck

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    Thanks I'll double check on that. :cheers: I don't know if the majority of people who do this just don't bother to put the bar back in or if the batter is in the way. :confused: I bought the tray yesterday and will be installing it today or tomorrow so I'll set the battery in and see.

    As for the isolator, I was under the impression (especially if you have miss matched or way different ages of batteries) that you separate to put less stress on either battery and the alt. Another is to assure no matter how much you drain one you have enough to start the vehicle with the other. :dunno: I know generally if your wenching, running extra lights jammin' to tunes:rocker: (whatever) your vehicle is running anyway.

    I've read articles on both POVs isolated vs. in series. It might be one of those "6 of one 1/2 dozen of the other " things.

    I'm still trying to figure how I want my lay out either way. I only have extra lights (for now) but, as I add amps,a wench, power invertor, etc. I would like a more evenly distributed load between the 2.:D
     
    Last edited: Mar 31, 2013
  5. Zembonez

    Zembonez I hate black wheels...

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    In series works well. Once they are charged, the alternator only maintains a charge. Unless you are going to be draining them without the engine running, I don't see any reason for the added expense or complexity... but it's YOUR truck!

    EDIT: IN PARALLEL ONLY! Not series...
     
  6. Bigredmariner

    Bigredmariner Administrator

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    Wiring two 12 volt batteries in series will result in 24 volts to your system. I'm not sure that's the direction you should go.


    Posted from my iPad via Tapatalk HD.
     
  7. Zembonez

    Zembonez I hate black wheels...

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    HAHAHAHA! :lol:

    UH. OOPS.

    Obviously they need to be wired in parallel unless you want to start a new 24 volt module frying trend...
     
  8. Bigredmariner

    Bigredmariner Administrator

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    Lol


    Posted from my iPad via Tapatalk HD.
     
  9. daddy

    daddy Follicularly Disenfra

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    I say wire them up in seriallel and get the best both have to ffer.
     
  10. Zembonez

    Zembonez I hate black wheels...

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    That takes three batteries and one has to be 7 volts.
     

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